This Portable Digital Lux Meterwith PC Interfacecan measure up to 200,000 lux. It is used for checking the level of luminance, the measure of the amount of light falling on a given surface. It applied in the fields of cinematography and scenic design, in order to determine the optimum light level for a scene, where they can help to reduce the amount of waste light used in the home, light pollution outdoors, and plant growing to ensure proper light levels.